Just purchased a 2014 All Terrain CCSB 6.2 (Aug 14 build) and I have the shakes from 70-85. Dealer road forced tires and now shakes only seem to be present when cold and get better after driving for about 10 minutes. I decided to inflate the tires to 37 #'s cold and now the truck rides smoother even while cold, but still not perfect. I think/hope there might be something to this being tire related (Goodyear) and the tires flat spotting while parked. Love the truck otherwise so hoping the dealer can resolve whenever I get a chance to take back in for service.